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Taya2010 [7]
3 years ago
11

Hich expression is equivalent to 21x + 9 - 3x

Mathematics
1 answer:
tiny-mole [99]3 years ago
5 0
(21x-3x)+9
Answer is 18x+9  

hope i helped if did plz mark as brainliest^-^
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How do you solve this and what is the answer
Thepotemich [5.8K]

Answer:

x = 38°

Step-by-step explanation:

An external angle is equal to the sum of the opposite internal angles of a triangle. Either of the internal angles at the base can be found as the supllement of its external angle.

∠OLM = 180° -134° = 46°

Then

... x +46° = 84°

... x = 38° . . . . . subtract 46°

6 0
4 years ago
A safe has a 4-digit lock code that does not include zero as a digit and no digit is repeated. What is the probability of a lock
Margarita [4]

Answer:

A. 9

B. 3,024

C. 4

D. 24

hope this helps!

8 0
3 years ago
Read 2 more answers
Can someone answer for me please, if you're great at math.
jonny [76]
Assuming that c is the length of AB (as is usually the case in the angle-side notation for triangles):
If sin(35) = 12/c, we can transform by multiplying both sides by c, and dividing both by sin(35) to get
c = 12/sin(35)
Evaluating using a calculator gives 20.92 units.
3 0
3 years ago
Find the difference.<br>(2n - 9) - 5(-2.4n + 4) =​
MArishka [77]

Answer:

14n - 29

Step-by-step explanation:

First you'd distribute in the parentheses by -5. -5 × -2.4n and -5 × 4 which you would get 12 and -20.

Then, bring everything down and combine like terms. 2n + 12n = 14n || -9 - 20 or -9 - (-20) = -29. 14n - 29 is the lowest you can simplify because you can subtract a variable and a constant together.

5 0
3 years ago
Calculs from the north you walk 1 mile and a temperature was 5 degrees from the west you walk 1 mile and the temperature change
MakcuM [25]

Answer: 6.4 degrees

Step-by-step explanation:

a= 5 degrees temperature difference to the north gives the opposite of the triangle,

b = 4 degrees temperature difference to the west gives the adjacent,

c = temperature difference of 1 mile to the south east gives the hypotenuse.

Therefore,

Using Pythagoras equation,

c² = b² + a²

c = sqrt( 5² + 4²)

c = sqrt(41) = 6.4 degrees

Therefore, there will be 6.4 degrees temperature difference 1 mile to the south east

4 0
3 years ago
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